I thought about that too, though I can't figure out how they would make the helmet and goggles so similar. If it's a boot, its a fantastic copy. Even then the markings and paint aps seem to match up with the other photos submitted. Maybe the black goggle one is a prototype? Very odd indeed.

In most of those photos the glasses look dark tinted, which match with mine. I'm just gonna choose to believe that there was some variation in the paint apps on the goggles, ie some got more or less black applied to the glass part.